Where's the AC low pressure valve

Asked by Jun 08, 2008 at 06:15 PM about the 1998 Pontiac Grand Am 4 Dr SE Sedan

Question type: Maintenance & Repair

5 Answers

on passenger side under hood,look for a blue cap starting at firewall to front .

11 of 11 people found this helpful.
195

Its normally on the back of the motor on the passenger side. My a/c guy has to reach his hand a good ways down into the motor to get to it so yours might be the same...

4 of 4 people found this helpful.
575

well my sister has a 98 with the 3.1, its on the front right hand side, on the bottom of the motor, it should be right on the line coming out of the a/c compressor, it was a little hard to find till i googled it, the 4 cylinders should be on top of the motor right hand side, my 95's is, hope this is helpful to you, good luck.

3 of 3 people found this helpful.
140

OK After reading and looking some said it was a green cap some said a blue cap some said it was up front some said it was on the fire wall.. so the answer is , Its a blue cap and you cannot see it it !! look directly in the BACK of engine in the center , look all the way down you will see 2 aluminium large line , reach your hand down and follow the line it will curve around a bit and you feel it!! but wont see it it .. just unscrew and plug the refill line .. Have an Awesome day ! 2003 Grand Am 6 cylinder!

14 of 14 people found this helpful.

Need a small hand to reach 2003 Grand Am low pressure service port for R-134A refill. Low Pressure Service Port located between fire wall and alternator, at the 18" below. Two cans R-134A a year by myself, ($12) 15 minutes job, save money. No need a mechanics. No need any gauge as long as inside outlet temperature is 20 degree+ lower than outside to determine how many cans of R-134A.

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